sudoroot

Long story short I found an 03' 350Z automatic for a good price with a blown cylinder, I had a friend that had what he said was a 07' G35 engine that he he could swap in. A couple weeks later when i got the car back i was under the hood swapping out my intake filter and though it's probably my fault for not checking the work done, the intake looks like a DE intake. Given that the research that I've done the HR's have twin intakes. Not to mention the electronics are different for the throttle etc for twin intakes.

To my knowledge all 07' G35's use the HR engine, and the HR engines do not bolt up to the transmission the same, is this correct? Do I have another DE engine? Is it possible that he just used the intake from the DE and put it on the HR?

There is a noticeable horsepower difference, he said that it had larger pistons and heads, though i haven't verified it. The car idle RPM is different than before, it idles cold around 1-1.5k and around 400 or 500 when warm.

Is there a way to find out if it is a DE or HR?

craig12895

iTrader: (7)

I have never heard of swapping a DE intake onto a HR so i would have to assume you have a DE

dcains

iTrader: (15)

It's a DE. No simple way to drop an HR into an early chassis.

bubbleteaZ

Its a DE

dkmura

iTrader: (64)

Welcome-there's no easy way to say this, but your friend has sold you a tale. The VQ35HR is almost a totally different engine than the VQ35DE, you'd need a different main and engine harness, together with the ECM to run it. Also, the starter is on the opposite side and the steering racks are different. Not sure about automatic trannys, never had much time for them. But the '07 and '08 G35s did use five speed autos, not the new seven-speeds which debuted in '09.

Bottom line, it's highly unlikely you have an HR in your Z. How much did you pay for the swap?

Cookiezor

i dont think its possible to put a de intake to hr engine due to the dual mafs, and tps, unless u do some crazy electircal rewiring, even that wont gaurantee proper work. and i also dont think that u have a very good friend, or a person u can call a friend.

jzk91

iTrader: (1)

Isn't the g35 sedan the one that had hr and coupe that still had de for 07 if I am correct?

sudoroot

I paid 1500 for the engine and 500 for the work.

winchman

The VQ35DE is fitted to the following vehicles: (https://en.wikipedia.org/wiki/Nissan_VQ_engine#VQ35DE)
North American
2001–2004 Nissan Pathfinder- 240 hp (179 kW)
2013–present Nissan Pathfinder- 260 hp (194 kW)
2001–2004 Infiniti QX4- 240 hp (179 kW)
2002–2004 Infiniti I35- 255 hp (190 kW)
2002–present Nissan Altima- 240 hp (179 kW) to 270 hp (201 kW)
2002–present Nissan Maxima- 255 hp (190 kW) to 300 hp (224 kW)
2003–2006 Nissan 350Z- 287 hp (214 kW) to 300 hp (224 kW)
2003–2007 Infiniti G35 Coupe- 280 hp (209 kW) to 298 hp (222 kW)
2003–2006 Infiniti G35 Sedan- 260 hp (194 kW) to 298 hp (222 kW)
2003–2008 Infiniti FX35- 275 hp (205 kW)
2003–present Nissan Murano (Z50)- 240 hp (179 kW) to 265 hp (198 kW)
2004–present Nissan Quest- 235 hp (175 kW) to 260 hp (194 kW)
2006–2008 Infiniti M35- 275 hp (205 kW) to 280 hp (209 kW)
2013–2013 Infiniti JX35- 265 hp (198 kW)
2014–present Infiniti QX60- 265 hp (198 kW)

Looks like you got a DE engine with 298HP out of an '07 G35 coupe.

Firebase99

Correct, ONLY the sedan received the HR. OP...its a DE. How many intakes does it have?

sudoroot

It's a single intake, which is why i said it's a DE intake since the HR is a twin intake. I just didn't know if you could have a DE intake on an HR engine and if you can, how could you tell that it's a HR besides the intake?

dcains

iTrader: (15)

Dude, it's a DE, give it a rest. You can't mix and match parts between the two motors.

travlee

iTrader: (8)

you got a new motor and installation for 2k... that isnt bad, but like all the others have said you have the DE motor

dkmura

iTrader: (64)

I understand what the OP is saying: he assumed he was getting an HR since the engine was out of an '07 Infiniti. But as Winchman has pointed out, '07 was the last year the G35 coupe utilized the VQ35DE. So the OP paid $2K for an engine swap, complete with labor and the VQ runs fine. That's not an overly inflated price for a DE swap In which someone else supplied the labor.

As for your expectations of getting an HR, that's just a lesson for yourself. In the future, ask more questions, verify what you're getting and never assume anything. Enjoy your freshened DE swap (which may be perkier b/c of slightly increased compression) and your newfound knowledge about VQs.

oldschool350z

iTrader: (1)

DE.

/thread.

Underscore_Hero

Playing devil's advocate, and in for some learning too, but is it possible to use an HR block with the DE plenum and intake?

dkmura

iTrader: (64)

Not very feasible- the HR is essentially a different engine, with 90% different components. The plenums are different and won't bolt up correctly. Beyond that, the cam profiles are designed to maximize the twin intakes and wouldn't function optimally with a DE plenum and intake.

The main harness and ECM are different and there'll always be some parameters that won't be functional in combining the car and engine. Even if you custom built such an animal, the performance would not justify the effort.

Underscore_Hero

CNunes_95

HR motor will not bolt up to a DE transmission. Single intakes are DE motors and Dual Intakes/Throttle Bodies are HR motors. And yes, they''re is a notable difference between the two

iideadeyeii

iTrader: (6)

I would say this is a great price for an engine swap. DE engines around here run
around $1100(picked up. Dropped off probably a few hundred more) and labor would def be more than $900 at a shop I would assume.
(i would charge around $600-700 personally in my garage including fluids with a 30 second warranty)